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BCR402 Dark Smoky Quartz

BCR402 Dark Smoky Quartz


  • Here’s a new item, Dark Smoky Quartz.
  •  It has excellent clarity, amazing inclusions and “rainbow” reflections.
  • A great rock for cutting and any lapidary project.
  • This particular select specimen measures 3 1/2″ x 1 3/4″ x 1 5/8″, 3 3/8″ x 3 1/8″ x 2 1/2″ and weighs nearly 1 3/4 pounds.

MOHS hardness scale of  6.5 – 7

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Quartz is the second most common mineral in the Earth’s continental crust.  It is mainly composed of Silica or Silica based minerals.  Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification.  There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

Additional information

Weight1.75 lbs
Dimensions5 × 6.5 × 4 in

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